Simeon Panda: Natural or Steroids?

Simeon Panda has always said he is a lifetime natural, and he has gone further than most fitness influencers to back that up: he arranged his own polygraph and a hair follicle test and reported passing both. His size, his reported stats and the limits of those tests are why the question still comes up. The honest answer is that he may well be natural, but nothing proves it either way.

Panda is a British bodybuilder, fitness model and entrepreneur from London, known for one of the most dramatic V-tapers in fitness: a wide, heavily muscled upper body on a very small waist. That look has earned him millions of followers across social media.

This page weighs the public evidence on both sides: his testing history, his reported numbers, his gains timeline, and what each of these can and cannot tell us.

Who Is Simeon Panda?

Panda competed in Musclemania alongside other well-known physique athletes such as Ulisses Jr and Chul Soon, and later built his career mainly through fitness modelling, training content and his own brand. He is one of the most followed bodybuilders on social media.

The steroid question follows him because of his size. Some people look at his upper body and assume it cannot be natural; others point to his testing and his small waist and say it must be. Neither reaction is evidence on its own.

Simeon Panda’s Reported Stats

These are the figures most often quoted for Panda. They come from interviews and fan sites rather than verified measurements, so treat them as approximate.

FFMI Analysis

The fat-free mass index (FFMI) compares lean mass to height. It is one of the more objective ways to estimate whether a physique sits inside the natural range. In a well-known 1995 study by Kouri and colleagues, the drug-free lifters measured topped out at an FFMI of about 25, while many steroid users went above it.

On his reported numbers, Panda’s FFMI is close to 28. Even if he is 15 lbs lighter and a little less lean than reported, he sits right at the top of the natural range. That is the strongest data point against his natural claim.

It is not proof. FFMI depends on accurate height, weight and body fat figures, and quoted stats are often rounded up. The 1995 cut-off also came from a fairly small group of lifters, and a few genetic outliers may exceed it naturally. FFMI tells you how unusual a physique is, not how it was built.

The Case That Simeon Panda Uses Steroids

His Size Compared With Arnold

A common argument from critics is that Panda weighs about the same as Arnold Schwarzenegger in his prime, and Arnold has openly said he used steroids. If the weights match, the argument goes, so must the methods.

The comparison is weaker than it sounds. Bodyweight says little about how much of it is muscle, and both men’s stats are quoted rather than measured. Arnold’s commonly cited contest measurements are also larger: a chest of around 57 inches and 22-inch arms, against roughly 50 and 21 inches for Panda. Side by side, Arnold carried noticeably more muscle.

Even if Panda were as big as Arnold, that alone would not prove steroid use. Far more people lift today than in the 1970s, so the pool of genetically gifted lifters is much larger, and the biggest natural lifters today can be bigger than the biggest of earlier eras.

An FFMI Above the Natural Range

The FFMI figures above are the more serious point. An estimated FFMI of 27-28 is in territory the research mostly links to steroid use. If his reported stats are accurate, Panda would be one of the most extreme natural outliers on record.

Competition Testing Is Predictable

Musclemania markets itself as a natural federation and tests its competitors, but that testing is tied to the competition. Athletes know when it will happen, which in principle lets an enhanced athlete time their use to pass. This is a weakness of most competition-based testing, not something specific to Panda, and it does not suggest he cheated. It simply means a Musclemania pro card is not strong proof of natural status.

Polygraphs Prove Less Than They Seem

The original version of this article said Panda’s lie detector result proved he was almost certainly natural. That overstated it. Accuracy figures like 98% come from the polygraph industry. Independent reviews, including the US National Research Council’s 2003 report on polygraph testing, found the science behind it weak: results are better than chance but far from reliable, which is why most courts do not accept them as evidence.

The Case That Simeon Panda Is Natural

He Arranged His Own Polygraph

After years of being called a fake natty, Panda arranged a polygraph with Don Cargill, a senior UK polygraph examiner. He was asked two questions:

• Have you ever used any form of steroids in your entire life?
• Have you ever used any form of human growth hormone in your entire life?

He answered no to both, and the examiner reported no signs of deception. As covered above, a polygraph cannot prove that someone is telling the truth. But volunteering for one, on camera, about your whole life, is not what most people would do if they had something to hide.

He Reported Passing a Hair Follicle Test

Panda also arranged a hair follicle test and reported passing it. Hair testing looks back further than a standard urine test, typically covering about the last three months, depending on the length of hair sampled.

Its limit is the same as the polygraph’s: he chose the date. A clean result shows he was not using detectable compounds in the window before that test. It cannot speak for the rest of his career.

A Natural-Looking Gains Timeline

Natural lifters tend to follow a predictable pattern: fast gains in the first few years, then a long plateau with slow progress. A lifter who plateaus and then suddenly gets much bigger again raises questions, because that second jump is a common sign of starting steroids.

Panda’s before-and-after photos show most of the change coming early in his training. Across many years of public photos since, his size has stayed broadly similar, with the main changes in conditioning rather than mass. That pattern fits a natural lifter with exceptional genetics who responded fast to training.

In an early interview, Panda described asking a muscular man, as a skinny teenager, how he had built his body. The answer was to get some equipment and train at home, and Panda said it was the first and last time he asked anyone how to build muscle. It is a small detail, but it fits someone whose body responded to training unusually well from the start.

No Obvious Steroid Side Effects

His public photos do not show the classic markers people look for: no obvious bloating or water retention, no visible acne on the back or shoulders, no gynecomastia and no clear change in facial structure.

This point is weaker than it looks. Side effects vary a lot between people, compounds and doses, and moderate use with good management can leave few visible signs. The absence of side effects is consistent with natural status, but it does not prove it.

A Very Small Waist

Panda’s waist is reported at about 31 inches, against roughly 34 inches commonly cited for Arnold at a similar height and leanness. A small waist on a very large upper body is one of his most striking features.

The original version of this article claimed a waist like this would be almost impossible on steroids. That is not true. The thick, distended midsection people call bodybuilder bubble gut is mostly linked to extreme food intake and drugs such as growth hormone and insulin at the top of the sport, not to steroid use in general. Plenty of enhanced physique competitors have small waists. His waist is mainly a sign of good bone structure and genetics.

He Has Addressed It Publicly, Repeatedly

Panda has discussed the steroid accusations on video several times, including in a YouTube video with Ulisses Jr in which both said they were natural. Nobody forced him to put himself under that scrutiny or to arrange tests. Speaking out does not prove anything, but it is a consistent, long-running stance, and he clearly finds the accusations frustrating.

Genetics: Why Size Alone Proves Nothing

Most of the accusations against Panda rest on one thing: he is very big. Size alone does not settle the question. Genetics shape how much muscle a person can build, how fast they build it and how it looks on their frame. Two people can train and eat the same way for years and end up with very different physiques.

Many top bodybuilders were already far more muscular than average before they ever competed, which is part of why they reached the top. The same may be true of Panda. Drug-tested athletes show how far elite genetics can go; see our list of the best natural bodybuilders for examples.

Verdict: Natural or Steroids?

Weighing it all, there is no direct evidence that Simeon Panda has used steroids, and he has done more than most to support his natural claim. At the same time, his reported size and leanness put him beyond what drug-free lifters usually reach, and none of his tests were unannounced.

Our verdict is possibly natural, not proven. If he is natural, he has some of the best muscle-building genetics in the sport. If his real stats are smaller than the quoted ones, the FFMI case against him gets weaker too.

What Would Settle It?

Only unannounced, out-of-competition testing, repeated over time, could settle the question with confidence. That is the standard used in Olympic and other drug-tested sports. Short of that, even more passed tests would probably not convince his harshest critics, because any scheduled test leaves room for doubt.

For most lifters, the useful lesson is not the verdict. It is that a physique like this takes rare genetics and years of consistent training, and that comparing yourself to the top 0.1% of responders, natural or not, is a fast way to lose motivation.